How much do you know about Iran? Take our quiz to find out.

The world's focus has turned upon Iran in recent months, as it moves ahead with its nuclear program despite crippling sanctions from the West and the threat of preemptive attack by Israel. But how much do you really know about Iran's history and place in the Middle East? Take our quiz to test your knowledge.

1.
Modern Iran lies at the heart of the lands of which ancient empire?

Morteza Nikoubazl/Reuters

Iranians walk on a bridge through the rubble of Bam, a centuries-old citadel town in eastern Iran, in Sept. 2004. Built in the sixth century BCE, the adobe citadel was devastated by a Dec. 2003 earthquake that killed more than 26,000 people.